From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Thread: 103376,1d6e3c069f70fa5a
X-Google-Attributes: gid103376,public
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!news3.google.com!news.glorb.com!border1.nntp.dca.giganews.com!local01.nntp.dca.giganews.com!nntp.scarlet.biz!news.scarlet.biz.POSTED!not-for-mail
NNTP-Posting-Date: Tue, 23 Aug 2005 12:22:16 -0500
Newsgroups: comp.lang.ada
Subject: Re: "Do not use" feature list for GNAT
References: <877jecppv2.fsf@mid.deneb.enyo.de>
From: Ludovic Brenta <ludovic.brenta@tiscali.be>
Date: Tue, 23 Aug 2005 19:23:26 +0200
Message-ID: <871x4ktvn5.fsf@tiscali.be>
User-Agent: Gnus/5.1007 (Gnus v5.10.7) Emacs/21.4 (gnu/linux)
Cancel-Lock: sha1:La8OLKA7ay4q0qeF34WJca7xJlY=
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
NNTP-Posting-Host: 83.134.245.178
X-Trace: 
 sv3-nPMsdy/fIOpZUa+/mPDqoQoidZwyy8zKz+waFXEooVbGmaXWHKHuDilQ2L61fdcARkpSH8Pg6Yo38w8!ByWiIUBYgvS1N6OROLbqAQ4+NTKQWBO5JTxIx5/nmOPHS4LvkwtC10l+J2POHjjl
X-Complaints-To: abuse@scarlet.be
X-DMCA-Complaints-To: abuse@scarlet.biz
X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint
 properly
X-Postfilter: 1.3.32
Xref: g2news1.google.com comp.lang.ada:4265
Date: 2005-08-23T19:23:26+02:00
List-Id: <comp.lang.ada>

Florian Weimer <fw@deneb.enyo.de> writes:
> Would you like to share a list of language areas which you should
> avoid when using GNAT because AdaCore customers do not stress-test
> them and they are riddled with strange bugs?
>
> My current list looks roughly like this:
>
>   - access discriminants (several ICE-on-legal bugs)
>
>   - subunits (ICE, maybe on invalid input, I'm not sure)
>
>   - the 'Valid attribute (wrong-code bug with GCC 4)
>
>   - conditional entry calls (run-time bug in GNAT 3.15p)
>
> Anything I've missed so far?

Sometimes -gnatVa causes ICEs; I normally compile all Debian packages
with -gnatafno -gnatVa -O2, but I disable -gnatVa for certain files.

I hane not had any bad experiences with subunits and I haven't used
the other features enough to judge.

This is with 3.15p.

-- 
Ludovic Brenta.